Turn a list of full URLs into a clean list of root domains or hostnames in one paste. IndexVero handles www and multi-part TLDs like co.uk and com.vn, then deduplicates so you get a unique domain list.
Who it’s for
- Outreach teams building a unique list of referring domains from a URL export.
- SEOs counting how many distinct domains link to a site, not how many URLs.
- Link builders turning a delivered link list into a domain footprint for QC.
- Anyone building blocklists, prospect lists, or disavow files by domain.
How it works
Paste your URLs
Drop in any list of full URLs — with or without protocol, www, or paths.
Choose root or host
Extract the root domain (example.com) or the full hostname (blog.example.com), and strip www if you want.
Copy the domains
The unique domain list appears instantly. Copy all or download as TXT.
Example: what goes in, what comes out
| URL | Root domain | Hostname |
|---|---|---|
| https://blog.example.co.uk/post | example.co.uk | blog.example.co.uk |
| https://www.example.com/page | example.com | www.example.com |
| http://shop.example.com.vn/x | example.com.vn | shop.example.com.vn |
Features
Root domain or hostname
Reduce URLs to the registrable root domain, or keep the full subdomain hostname — your choice per run.
Smart multi-part TLDs
Correctly handles country and second-level TLDs such as co.uk, com.au, and com.vn instead of chopping them wrong.
Instant dedup & export
Deduplicate the extracted domains live and export a clean list as TXT with one click.
Root domain vs hostname vs “just split on dots”
Extracting a domain sounds trivial until the edge cases hit — and they’re the ones that quietly corrupt a domain count:
- Multi-part TLDs — naive “take the last two labels” turns
example.co.ukintoco.uk. You need the registrable domain (eTLD+1), which is what this tool returns. - Subdomains —
blog.example.comandshop.example.comare one root domain but two hostnames. Which you want depends on the job: counting referring domains → root; auditing specific properties → hostname. - www — a subdomain that usually shouldn’t inflate your count; strip it unless it matters.
Picking root vs hostname deliberately is the difference between “40 referring domains” and “40 hostnames that are really 22 domains.”
Limitations & privacy
- It parses the host from each line; it doesn’t fetch the pages, so it won’t tell you whether a domain is live — pair with the Broken Link Checker for that.
- Very new or obscure multi-part TLDs may occasionally need review, though common ones are handled.
- Parsing runs live in your browser; your list isn’t uploaded.
FAQ
How do I extract the domain from a URL?
Paste your URLs and IndexVero parses each one to return either its root domain or full hostname, then removes duplicates so you get a clean domain list.
Does it handle www and subdomains?
Yes. You can strip www and choose whether to keep subdomains (hostname mode) or collapse to the registrable root domain.
What about TLDs like co.uk?
The extractor recognizes common multi-part TLDs (co.uk, com.au, com.vn and more) so example.co.uk stays intact instead of becoming co.uk.
Can I deduplicate the result?
Yes. Turn on deduplicate output to collapse repeated domains into a single unique list before you export.